Machine for spreading sand gravel, etc.



Oct. 30, 1928.

l. E. HILLER MACHINE FOR SPREADING SAND, GRAVBL, ETC

bz iginal Filed May 18, 1925 2 Sheets-Sheet 1 Inve7z%r Z EZHz'l/er I. E. HILLER IACHINE FOR SPREADING SAND, GRAVEL, ETC

Original Filed May 18, 1925 2 Sheets-Sheet 2 I. am nllllllflllllllllll! lHlllll'lllllillllllllllll' Patented Oct. 30, 19 28.

UNITED STATES PATENT. or c I ISAACE. KILLER, OF MARION, MASSACHUSETTS.

MACHINE r012. SPBEADING SAND, GRAVEL, re.

Original application filed May 18, 1925, Serial No. 041. Divided and this application filed December 14,

This. invention relates to scattering un-. loading mechanism for a vehicle having a dumping body, and has for its chief object to provide means for automatically rendering said mechanism operative by a dumping movement of the body, and inoperative by a return of the body to a horizontal or. non dumping position. i

Of the accompanying drawings forming part of this specification,

Figure 1 is a side elevation of a motor truck adapted in accordance with my inven tion to spread loose material;

Figure 2 is a fragmentary section on line 22 of Figure 1. b

Figure 3 is a section on line 3 3 of Figure 6. i V

Figure 4 is a section on line a e of Figure 1.

Figure 5 is an enlargement of a portion of Figure 3.

Figure 6 is-a rear elevation, parts being shown in section.

Figure 7 is a section on line 77 of Figure 1, the body being horizontal. I

Figure 8 is a view similar to Figure. 7, the body-being inclined and certain parts shown in section in Figure 7 being shown in elevation. r

The same reference characters indicate the same parts in all of the figures.

In the drawings 12, 12 designate the driving rear wheels of a'motor truck, and 13 designates the chassis supported, as usual, by the driving-wheels and by the steering forward wheels (notshown). v

, Fixed to the longitudinal side bars of the chassis are upwardlyprojecting standards 14, 1 1, having sockets 15, (Figure 7), through which extends a transverse horizontal shaft 16, fixed to the sockets by set screws or the like, and constituting a pivotal support or axis on which bearing blocks 17 and 18, fixed by bolts 19 to the'bottom of the load-carrying and dumping body 20, are mounted to turn, sothatthe body may be oscillated'on the fixed shaft 16, and assume the horizontalcarrying position shown'by full lines in Figure 1, and the inclined or tilted dumping position shown by dotted lines. The bearing blocks 17 and 18 turn' on the fixed axis with the body, and the block 18 is formed to act as a clutch-closing cam, for a purpose hereinafter stated, when the body is tilted. The rearward projection of.

Serial No. 154,675.

the body 20 from the fixed axis 16, is greater than itsforward projection from said axis, so that when the body is horizontal, the center of gravity of the body and of a load carr1e d thereby, is at the rear of the fixed axis.

Thechassis is provided with an upwardly projecting support or stop 22, on which the forward end portion ofthe body bears, when the body is horizontal, the stop and the fixed axis conjointly supporting the body in a horizontal position. a The forward end of the body is normally held against the stop 22, by yielding holding-down means, preferably embodied in contractile springs 23, fixed to the body and to the chassis, as shown by Figure 1, the. contractile force of said springs being sufiicient to hold the forward end of the body down upon the stop 22, when the body is not loaded. lVhen the body isloaded, the location of the'center of gravity behind the fixed axis causes the excess weight of the rear portion of the body and load to tiltthebody to a. dumping or delivering positiomwhen this action is permitted, as next described.

The machine is provided with "locking means adapted to positively hold the forward end of the body. on the stop 22, so

that whether the body is loaded or not, its

forwa'rdend cannot rise until the locking means is operatedby the driver to release the forward end of the body. j Saidlocking means in the embodiment of the invention here shown, includes a movable locking arm 24, pivoted at 2,5 to the chassis and provided with a notch 26, adapted to engage a fixed detent 27 on the body, the locking arm being caused to automatically engage the detent by a spring 28, fixed at one end to the chassis and at its other end to the locking arm, as shown by Figure 1. The releasing means operable by the driver, is eiinbodied ina rod 29 jointed to the free end of the locking arm and extending forward to the drivers station, where it is connected with a release loo lever 29 operable by the driver to-release the locking arm from the detent.

If the body is. loaded when this releaseis effected, the body is tilted. The locking arm is provided with an upper notch 26 near its free end, which engages the detent 27 when the body is inclined, so that the body remains tilted until the load is entirely discharged, and until the locking 'arm. is again moved forward by the driver, thus permitting the pulling-down springs 23 to restore the body to its horizontal position. Provision is there fore made for preventing the pulling down of the forward end of the body by the springs 23, until the last remnant of the load has been discharged, a movement of the release lever being then required to permit the springs 23 to restore the body to its horizontal position. 7

The detent 2'? may be a portion of an angular rod or bar 27 secured at, its ends to the body at 27.

The structure thus far described is described and claimed by my application a], titled Improvement in machines for spread ing sand, gravel. etc., filed May 18, 1925, Serial No. 110,041, of which the present appliration is a division.

I will now describe the scattering unload ing mechanism constituting the subject matterlof this divisional application.

Journaled in bearings 31, fixed to the rear end of the body at opposite sides thereof, is a shaft 32, constituting an element of a rotary feeder, adaptedto control the discharge of gravel, etc, from the body. Said feeder,

in this instance, includes blades 33, tangenti al to the shaft 32, and secured thereto by bolts 34;. The feeder is located between the rear end of the bottom of the body and an end gate, preferably constructed as herein after described, and adapted to cooperate 'ith the feeder in permitting a regulated delivery of the material.

' To one 'end of thefeeder shaft 32 is fixed a gear 85, meshing with a feeder driving gear 36, which is driven in the direction indicated by the arrow in Figure 3, by connections between it and the rear axle of the truck. Said connections preferably include a sprocket wi eel 37, fixed to the rear axle, an outer sprocket wheel 38, ournaled to rotate on the fixed shaft or 16, a chain 39 connecting said wheels, an inner sprocket wheel 46, journaled to rotate on the axis 16, beside the outer wheel 38, a sprocket wheel ll, fixed to and coaxial with the larger gear 36, and. a sprocket chain s 2, co 'inecting the sprocket wheels 10 and 41. The snochet wheel i1 and gear 36 are fixed to a single hub 13, which is mounted to rotate on a stud 414: (Figure 2), fixed to a holderdo, bolted to one side of the body.

The sprocket wheels 38 and 10 on theaxle 16. are automatically disconnected from each other when the body assumes a horimental. po tion and are automatically cou- The bearing block 18, fixedto the body and adapted to turn on the fixed axis 16, is provided with an oblique end face 4C6, which I call a cam face, the same having the effect of a cam, when the block is turned on the axis 16,'by the inclination of the body. 4. designates a collar slidable on the axis 16, andengaged therewithby a key 48 (Figure 4), so that rotation of the collar is pre vented. The collar has anoblique end face or cam face 19, with which the cam face $6 is parallel when the body is horizontal. The inclination .of the body to its dumping position causes the cam face 4.6 of the l caring block 18 to force the collar (i7 end to, the left fromthe position shown by Figure 7. The collar 1? is contiguous to toe inner sprocket heel 40, and when thus forced cn'dwise, acts through an anti-friction thrustbearing 50, on the hub of said sprocket wheel, to force it laterally on theaxle 16, toward the outer sprocket wheel 38, the hub of which bears on a stop collar 51, fixed to the axis 16.

The inner sprocket wheel. i0 is provided with an inner clutch member 52, andthe outer sprocket wheel 88 with a complemental outer clutch member 53. A spring 54f interposed between said members normally forces them apart, by pressing the inner member 52 away from the outer member 53, as shown by Figure 7. The arrangement is such that when the body is horizontal, the clutch members are separated, so that the feeder is not driven, and when the body is inclined to its dumping position, the clutch member 52 is forced into clutching engagement with the clutch member 53, as shown by Figure 8, so that the feeder is driven. V

The end gate above mentioned, is preferably composed of an upper body portion 55, extending acrossthebody and having ears 56, pivoted at 57 to the body and spring tongues 58, fixed at their upper ends to the body portion, their free ends forming one side of an opening in which the feeder is located,as shown by Figure 3. The end gate may be swung on the pivots 57 to ads just the free ends of the tongues 58, toward or from the feeder, and confined by screws 59, entering slots 60 (Figure 1) onthe ears 56. The feeder bladesSS may be provided with slots 62, receiving the bolts 311 and. pern'iitting adjustment of the blades to arv the projection of their outer edges fronii the shaft. Provision is therefore made. for varyingthe thickness of a layer of material, deposited onthe ground when the machine is in operation.

The body is loaded -1Vl1jll6it$ forward end is locked against the stop 22, and is there fore horizontal. The machine may now be operated to transport the load to the loca; tion where it isto beused. When this location is reached, the driver moyes the release lever 29 'to disengage the locking arm 24 locked by the Looking arm.

- gate having the spring tongues 58.

from the detent 29, thus permitting the tilting of the body by its unbalance load, the holding-down springs '23 yielding, as indicated by dotted lines in Figure 1. The feeder is now rendered operative, as above described, to feed a layer of material of predetermined thickness,.froni the rear end of the body. The upper notch 26 of the loci ing arm engages the detent 27 on the body,

' when the latter reaches its delivering position, so that the body is again locked and cannot be pulled down by the springs 23. until the driver again operates therelease lever 29' Provision is therefore made for discharging the entireload, before the forward end'of the vbody is pulled down by the springs 23. After the. complete discharge of thelead, the drivermay again disengage the locking arm 24 from the detent 27, thus permitting the springs 23 to restore the body to its horizontal position, in which it is again It will be seen that the driver is enabled to cause the de scribed operation of the machine without leaving his seat.

The rear end portion of the bottom of the body, forming one edge of an opening in which the feeder is located, is preferably adjustable, and formed by a plate 65, secured by bolts 66 to the fixed portion 67 of the bottom, the plate being provided with slots 68. receiving the bolts 66, and permitting adjustment of the plate toward and from the axis of the feeder. The depth or thickness of a layer of-material deposited on the ground by. the machine, may be varied, as desired, by suitably adjusting the feeder lades 33, the plate 65, and the end free end portions of the tongues form one side of said opening, and each tongue is adapted to yield independently, to permit the passage of the larger pieces of material between til-1 tongues and the feeder.

I claim:

1. spreading machine comprising a motor vehicle, aload-carrying body, means connecting the bodywith the vehicl'e and including a shaft fixed to the chassis, and bearing blocks fixed to the body and adapted to turn on the shaft, a rotary feederat the rear end of the body, and driving mechanism connecting said feeder with the drivaxle of the vehicle, said mechanism including clutch members rotatable on the fixed shaft, one member being slidable, a.

cam face on one of said blocl s,and a camfaced sleeve keyed to and slidable on the shaft, and interposed between the bearing blocli and the slidable clutch m ember, the arrangement being such that when the body is tilted, the bearing-block and sleeve exert pressure on the slidable member and render the clutch operative, and when the body is hori- The zontal, the pressure is relaxed and the clutch rendered inoperative.

2. A spreading machine comprising a motor vehicle, a load-carrying body,means connecting the body with the vehicle and the rear axle, driving connections between. the sprocket wheel of the inner clutch member and the feedeiyand means operable by movements of the body for connecting the clutch members when the body is tilted,

and disconnecting the same when the body is horizontal.

motor vehicle, a load-carrying body, means connecting the body with the vehicle chassis and including a shaft fixed to the chassis, and bearing blocks fixed to the body and o. A spreading machine comprising a' adapted to turnon the shaft, a rotary feeder at the rear end portion of the body, feeder operating mechanism including an outer clutch member rotatable on the fixed shaft, an inner clutch member slidable on the shaft, a spring normally separating said clutch members, a gear fixed to the feeder, a sprocket-wheel fixed to the rear axle, driving connections between the axle sprocketwheel and the outer clutch member, driving connections between the inner clutch member and thefeeder gear, a cam-face on one of said bearing blocks, and a cam-faced vsleeve slidable and non-rotatable on the fixed shaft and interposed between said bearing block and the inner clutch member, the arrangement being such that a movement of the body to a tilted position: causes pressure of the collar against the inner clutch member, to render the clutch operative, while movement of the body to a horizontal position permits separation of the clutch member by the spring to render the clutch inoperative.

4-. A spreading machine comprising a motor vehicle, a tiltable load-carrying body, body-supporting 1116-8113 including a transverse shaft fixed to the vehicle chassis, and

bearing blocks fixed to the body and adapted to turn on the shaft and thus permit the tilting of the body, a rotary feeder at the rear end of the body, and feeder-driving mechanism connectingthe feeder with the driving axle of the vehicle and including an outer clutch member rotatable on the shaft and connected with the driving axle, an inner clutch member slidable and rotatable on the shaft, and connected with the feeder,

the inner member beinginormally separated from the outer member When the body is horizontal, so that the driving mechanism is inoperative, a cam faceron one of the body blocks, and, a cam-faced collar slidable and non-rotatable on the fixed shaft, and interposed between the said bearing block. and the inner. clutch member, the arrangement mass s being such that the tilting of. the body causes pressure of. the collar against the inner clutch member to eonnec t the cluteh members. I i

In testimony whereof I have aflixed my signature.

ISAAC HILLER- 

